[Crypto projects](https://revain.org/projects/) › Ankr # Ankr (ANKR): how it works, supply and reviews ## In short - **Type**: Infrastructure provider (RPC, APIs, appchains, staking), not its own blockchain - **Maximum supply**: 10 billion ANKR - **Risks and caveats**: The December 2022 exploit was possible partly because one developer key was a single point of failure, as Ankr itself said. - **Checked**: 31 October 2026 ## Key facts - **Ticker**: ANKR - **Official site**: [ankr.com](https://www.ankr.com/) Key facts checked on 31 October 2026 against official sources. ## What is Ankr Ankr is a Web3 infrastructure provider. It sells multichain RPC endpoints and APIs, launches rollups and sidechains for clients, and runs liquid staking products. ANKR is its ERC-20 token, used for governance votes and delegated staking. ## Network and consensus | Parameter | Details | |---|---| | Type | Infrastructure provider (RPC, APIs, appchains, staking), not its own blockchain | | RPC coverage | 80+ chains over JSON-RPC and WebSockets, public and Premium tiers | | Runs on | ANKR is a token on Ethereum (contract 0x8290333cef9e6d528dd5618fb97a76f268f3edd4) | | Liquid staking | Liquid staking tokens such as ankrETH, ankrBNB and ankrFLOW across several chains | ## Supply and issuance | Parameter | Details | |---|---| | Maximum supply | 10 billion ANKR | | Inflation | No inflation is built into the token | | Initial distribution | 40% initial supply; 60% unlocked over 36 months, August 2019 to August 2022 | | Fee burn | About 2% of ANKR has been burned; Ankr says more burns are unlikely | ## What ANKR is used for - Governance: holders vote on proposals for Ankr Staking at 1 ANKR per vote; a proposer must lock 5,000,000 ANKR. - Delegated staking: holders stake ANKR to independent full nodes and earn ANKR rewards. ## Who develops and governs Ankr - **Company**: Ankr Inc. (party to the terms of use) - **Governance**: Token-holder proposals and votes; accepted proposals are implemented by the Ankr team - **Founders**: Chandler Song, co-founder and CEO (as of December 2022) ## History | Date | Event | |---|---| | 21 February 2019 | Ankr's token distribution smart contract dates from 21 February 2019. | | August 2019 | The 36-month unlock of 60% of the ANKR supply began (to August 2022). | | 1 December 2022 | An attacker used Ankr's compromised developer key to mint aBNBc; Ankr later discontinued aBNBc and aBNBb and airdropped ankrBNB. | | 20 December 2022 | Ankr published an after-action report and moved to multi-sig authentication and timelocks for contract updates. | ## Security and audits - Ankr lists external audits of its staking products by Beosin, PeckShield, Veridise, Salus and Halborn (2020-2024). - After the December 2022 exploit, Ankr said it would require multi-sig authentication and timelocks for all contract updates and stricter background checks. ## Security incidents | Date | What happened | Source | |---|---|---| | 1 December 2022 | Key compromise: Attackers obtained the developer private key and altered the aBNBc liquid staking token contract, minting tokens without authorisation and swapping them on DEXes; Ankr estimated the damage at $5 million worth of BNB. Ankr said a former team member planted a malicious code package. Funds returned: Ankr said it would buy $5 million worth of BNB to compensate affected liquidity providers and airdrop new ankrBNB to affected aBNBc and aBNBb holders. | [ankr.com](https://www.ankr.com/blog/the-abnbc-token-report/) | Further incidents are reported by third parties (press, incident databases) but are not confirmed in the company’s own channels, so they are not listed here. ## Official ANKR contracts | Network | Contract address | |---|---| | Ethereum | [0x8290333cef9e6d528dd5618fb97a76f268f3edd4](https://etherscan.io/token/0x8290333cef9e6d528dd5618fb97a76f268f3edd4) | Address as linked from Ankr's tokenomics page (burn address link). ## Risks and caveats - The December 2022 exploit was possible partly because one developer key was a single point of failure, as Ankr itself said. - Ankr's terms say it is not responsible for third-party services, including bridge or smart contract failures. - Ankr reserves the right to change its token unlock plans at any time. ## Official links - Website: [www.ankr.com](https://www.ankr.com/) - Docs: [www.ankr.com/docs](https://www.ankr.com/docs/) - Source code: [github.com/Ankr-network](https://github.com/Ankr-network) - Governance forum: [www.ankr.com/docs/staking-extra/ankr-governance-mechanics](https://www.ankr.com/docs/staking-extra/ankr-governance-mechanics/) ## Questions and answers **What is Ankr?** Ankr is a Web3 infrastructure provider offering multichain RPC endpoints and APIs, appchains and liquid staking. ANKR is its ERC-20 token. **What is the total supply of ANKR?** 10 billion ANKR, with no inflation built in; about 2% has been burned. **What is the ANKR token used for?** Voting on Ankr Staking proposals (1 ANKR per vote) and delegated staking to full nodes. **Was Ankr hacked?** Yes. On 1 December 2022 attackers used Ankr's compromised developer key to mint aBNBc; Ankr estimated the damage at $5 million worth of BNB and compensated affected users. ## Sources - [Ankr - Home](https://www.ankr.com/) - [Ankr - Docs](https://www.ankr.com/docs/) - [Ankr - ANKR Tokenomics](https://www.ankr.com/docs/staking-extra/ankr-tokenomics/) - [Ankr - ANKR Governance Mechanics](https://www.ankr.com/docs/staking-extra/ankr-governance-mechanics/) - [Ankr - Audit reports](https://www.ankr.com/docs/staking-extra/audit-reports/) - [Ankr - Delegated ANKR token staking](https://www.ankr.com/docs/delegated-staking/ankr/overview/) - [Ankr - Flow Liquid Staking](https://www.ankr.com/docs/liquid-staking/flow/overview/) - [Ankr - Terms of Use](https://www.ankr.com/terms/) - [Ankr - The aBNBc Token Report (2 December 2022)](https://www.ankr.com/blog/the-abnbc-token-report/) - [Ankr - After Action Report (20 December 2022)](https://www.ankr.com/blog/after-action-report-our-findings-from-abnbc-token-exploit/) ## More in this section - [Ravencoin (RVN)](https://revain.org/projects/ravencoin/) - [ArcBlock (ABT)](https://revain.org/projects/arcblock/) - [Firo (FIRO)](https://revain.org/projects/firo/) - [GoChain (GO)](https://revain.org/projects/gochain/) - [AirSwap (AST)](https://revain.org/projects/airswap/) - [BitcoinZ (BTCZ)](https://revain.org/projects/bitcoinz/) - [All Crypto projects →](https://revain.org/projects/) ## How voting works Votes are anonymous and carry no text. 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